If you are referring to the jewelry collection, "making a piece" is a rigorous 15-step high-jewelry process centered around the four-leaf clover motif. Making-of Alhambra collection
Provides DIY TileKits and workshops to create traditional geometric mosaics at home. Van Cleef & Arpels Jewelry alhambra
Offers 2-hour interactive sessions to make mosaic panels or plasterwork. If you are referring to the jewelry collection,
Create a panel by cutting glazed ceramic tiles into complex geometric shapes that fit together like a puzzle. Create a panel by cutting glazed ceramic tiles
If you want to "make a piece" of the physical Alhambra, you can participate in artisan workshops that use the same 700-year-old techniques found in the palace.
Traditional Nasrid walls were decorated using gypsum plaster. You can carve intricate geometric or floral patterns into wet plaster or use molds for repetitive motifs, which are then painted with mineral pigments like blue and red.